<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

<c:if  test="${user == null}">
	<form action="login">
		用户名:<input type="text" name="username" /> 密码:<input type="password"
			name="password" /> <input type="submit" />
	</form>
</c:if>
<c:if  test="${user != null}">

用户名:<c:out value="${user.username}" />
密码:<c:out value="${user.password}" />
</c:if>






</body>
</html>